xlogypolardomain.cpp
237 lines
| 7.0 KiB
| text/x-c
|
CppLexer
Miikka Heikkinen
|
r2483 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2013 Digia Plc | ||||
** All rights reserved. | ||||
** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
** | ||||
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r2574 | ** This file is part of the Qt Enterprise Charts Add-on. | ||
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r2483 | ** | ||
** $QT_BEGIN_LICENSE$ | ||||
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r2574 | ** Licensees holding valid Qt Enterprise licenses may use this file in | ||
** accordance with the Qt Enterprise License Agreement provided with the | ||||
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r2483 | ** Software or, alternatively, in accordance with the terms contained in | ||
** a written agreement between you and Digia. | ||||
** | ||||
** If you have questions regarding the use of this file, please use | ||||
** contact form at http://qt.digia.com | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
#include "xlogypolardomain_p.h" | ||||
#include "qabstractaxis_p.h" | ||||
#include "qlogvalueaxis.h" | ||||
#include <qmath.h> | ||||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
XLogYPolarDomain::XLogYPolarDomain(QObject *parent) | ||||
: PolarDomain(parent), | ||||
m_logInnerY(0), | ||||
m_logOuterY(1), | ||||
m_logBaseY(10) | ||||
{ | ||||
} | ||||
XLogYPolarDomain::~XLogYPolarDomain() | ||||
{ | ||||
} | ||||
void XLogYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY) | ||||
{ | ||||
bool axisXChanged = false; | ||||
bool axisYChanged = false; | ||||
adjustLogDomainRanges(minY, maxY); | ||||
if (!qFuzzyIsNull(m_minX - minX) || !qFuzzyIsNull(m_maxX - maxX)) { | ||||
m_minX = minX; | ||||
m_maxX = maxX; | ||||
axisXChanged = true; | ||||
if (!m_signalsBlocked) | ||||
emit rangeHorizontalChanged(m_minX, m_maxX); | ||||
} | ||||
if (!qFuzzyIsNull(m_minY - minY) || !qFuzzyIsNull(m_maxY - maxY)) { | ||||
m_minY = minY; | ||||
m_maxY = maxY; | ||||
axisYChanged = true; | ||||
qreal logMinY = log10(m_minY) / log10(m_logBaseY); | ||||
qreal logMaxY = log10(m_maxY) / log10(m_logBaseY); | ||||
m_logInnerY = logMinY < logMaxY ? logMinY : logMaxY; | ||||
m_logOuterY = logMinY > logMaxY ? logMinY : logMaxY; | ||||
if (!m_signalsBlocked) | ||||
emit rangeVerticalChanged(m_minY, m_maxY); | ||||
} | ||||
if (axisXChanged || axisYChanged) | ||||
emit updated(); | ||||
} | ||||
void XLogYPolarDomain::zoomIn(const QRectF &rect) | ||||
{ | ||||
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r2545 | storeZoomReset(); | ||
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r2483 | qreal dx = spanX() / m_size.width(); | ||
qreal maxX = m_maxX; | ||||
qreal minX = m_minX; | ||||
maxX = minX + dx * rect.right(); | ||||
minX = minX + dx * rect.left(); | ||||
qreal logLeftY = m_logOuterY - rect.bottom() * (m_logOuterY - m_logInnerY) / m_size.height(); | ||||
qreal logRightY = m_logOuterY - rect.top() * (m_logOuterY - m_logInnerY) / m_size.height(); | ||||
qreal leftY = qPow(m_logBaseY, logLeftY); | ||||
qreal rightY = qPow(m_logBaseY, logRightY); | ||||
qreal minY = leftY < rightY ? leftY : rightY; | ||||
qreal maxY = leftY > rightY ? leftY : rightY; | ||||
setRange(minX, maxX, minY, maxY); | ||||
} | ||||
void XLogYPolarDomain::zoomOut(const QRectF &rect) | ||||
{ | ||||
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r2545 | storeZoomReset(); | ||
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r2483 | qreal dx = spanX() / rect.width(); | ||
qreal maxX = m_maxX; | ||||
qreal minX = m_minX; | ||||
minX = maxX - dx * rect.right(); | ||||
maxX = minX + dx * m_size.width(); | ||||
const qreal factorY = m_size.height() / rect.height(); | ||||
qreal newLogMinY = m_logInnerY + (m_logOuterY - m_logInnerY) / 2.0 * (1.0 - factorY); | ||||
qreal newLogMaxY = m_logInnerY + (m_logOuterY - m_logInnerY) / 2.0 * (1.0 + factorY); | ||||
qreal leftY = qPow(m_logBaseY, newLogMinY); | ||||
qreal rightY = qPow(m_logBaseY, newLogMaxY); | ||||
qreal minY = leftY < rightY ? leftY : rightY; | ||||
qreal maxY = leftY > rightY ? leftY : rightY; | ||||
setRange(minX, maxX, minY, maxY); | ||||
} | ||||
void XLogYPolarDomain::move(qreal dx, qreal dy) | ||||
{ | ||||
qreal x = spanX() / 360.0; | ||||
qreal maxX = m_maxX; | ||||
qreal minX = m_minX; | ||||
if (dx != 0) { | ||||
minX = minX + x * dx; | ||||
maxX = maxX + x * dx; | ||||
} | ||||
qreal stepY = dy * (m_logOuterY - m_logInnerY) / m_radius; | ||||
qreal leftY = qPow(m_logBaseY, m_logInnerY + stepY); | ||||
qreal rightY = qPow(m_logBaseY, m_logOuterY + stepY); | ||||
qreal minY = leftY < rightY ? leftY : rightY; | ||||
qreal maxY = leftY > rightY ? leftY : rightY; | ||||
setRange(minX, maxX, minY, maxY); | ||||
} | ||||
qreal XLogYPolarDomain::toAngularCoordinate(qreal value, bool &ok) const | ||||
{ | ||||
ok = true; | ||||
qreal f = (value - m_minX) / (m_maxX - m_minX); | ||||
return f * 360.0; | ||||
} | ||||
qreal XLogYPolarDomain::toRadialCoordinate(qreal value, bool &ok) const | ||||
{ | ||||
qreal retVal; | ||||
if (value <= 0) { | ||||
ok = false; | ||||
retVal = 0.0; | ||||
} else { | ||||
ok = true; | ||||
const qreal tickSpan = m_radius / qAbs(m_logOuterY - m_logInnerY); | ||||
const qreal logValue = log10(value) / log10(m_logBaseY); | ||||
const qreal valueDelta = logValue - m_logInnerY; | ||||
retVal = valueDelta * tickSpan; | ||||
if (retVal < 0.0) | ||||
retVal = 0.0; | ||||
} | ||||
return retVal; | ||||
} | ||||
QPointF XLogYPolarDomain::calculateDomainPoint(const QPointF &point) const | ||||
{ | ||||
if (point == m_center) | ||||
return QPointF(0.0, m_minY); | ||||
QLineF line(m_center, point); | ||||
qreal a = 90.0 - line.angle(); | ||||
if (a < 0.0) | ||||
a += 360.0; | ||||
a = ((a / 360.0) * (m_maxX - m_minX)) + m_minX; | ||||
const qreal deltaY = m_radius / qAbs(m_logOuterY - m_logInnerY); | ||||
qreal r = qPow(m_logBaseY, m_logInnerY + (line.length() / deltaY)); | ||||
return QPointF(a, r); | ||||
} | ||||
bool XLogYPolarDomain::attachAxis(QAbstractAxis *axis) | ||||
{ | ||||
QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis); | ||||
if (logAxis && logAxis->orientation() == Qt::Vertical) { | ||||
QObject::connect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleVerticalAxisBaseChanged(qreal))); | ||||
handleVerticalAxisBaseChanged(logAxis->base()); | ||||
} | ||||
return AbstractDomain::attachAxis(axis); | ||||
} | ||||
bool XLogYPolarDomain::detachAxis(QAbstractAxis *axis) | ||||
{ | ||||
QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis); | ||||
if (logAxis && logAxis->orientation() == Qt::Vertical) | ||||
QObject::disconnect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleVerticalAxisBaseChanged(qreal))); | ||||
return AbstractDomain::detachAxis(axis); | ||||
} | ||||
void XLogYPolarDomain::handleVerticalAxisBaseChanged(qreal baseY) | ||||
{ | ||||
m_logBaseY = baseY; | ||||
qreal logMinY = log10(m_minY) / log10(m_logBaseY); | ||||
qreal logMaxY = log10(m_maxY) / log10(m_logBaseY); | ||||
m_logInnerY = logMinY < logMaxY ? logMinY : logMaxY; | ||||
m_logOuterY = logMinY > logMaxY ? logMinY : logMaxY; | ||||
emit updated(); | ||||
} | ||||
// operators | ||||
bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator== (const XLogYPolarDomain &domain1, const XLogYPolarDomain &domain2) | ||||
{ | ||||
return (qFuzzyIsNull(domain1.m_maxX - domain2.m_maxX) | ||||
&& qFuzzyIsNull(domain1.m_maxY - domain2.m_maxY) | ||||
&& qFuzzyIsNull(domain1.m_minX - domain2.m_minX) | ||||
&& qFuzzyIsNull(domain1.m_minY - domain2.m_minY)); | ||||
} | ||||
bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator!= (const XLogYPolarDomain &domain1, const XLogYPolarDomain &domain2) | ||||
{ | ||||
return !(domain1 == domain2); | ||||
} | ||||
QDebug QTCOMMERCIALCHART_AUTOTEST_EXPORT operator<<(QDebug dbg, const XLogYPolarDomain &domain) | ||||
{ | ||||
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r2620 | #ifdef QT_NO_TEXTSTREAM | ||
Q_UNUSED(domain) | ||||
#else | ||||
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r2483 | dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; | ||
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r2620 | #endif | ||
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r2483 | return dbg.maybeSpace(); | ||
} | ||||
#include "moc_xlogypolardomain_p.cpp" | ||||
QTCOMMERCIALCHART_END_NAMESPACE | ||||